.middle {
    width: 1200px;
    margin: 50px auto;
    height: 1000px;
    border: 1px solid red;
}

.product-introduce {
    height: 40px;
    border-bottom: 1px solid red;
    font-family: 仿宋;
    line-height: 40px;
    font-size: 25px;
    padding: 15px 0 15px 15px;
}

.product-introduce > div:first-child {
    float: left;
}

.product-introduce > div:last-child {
    float: right;

}

.product-introduce > div:last-child div {
    margin-top: -15px;
    float: right;
    padding: 0 20px;
    line-height: 71px;
    height: 71px;
}

.product-introduce > div:last-child div:hover {
    background-color: #e69137;
    color: white;
}

/*-----------------------产品内容------------------------------------------*/
.middle > div:nth-child(2) {
    padding: 15px;
}

.middle > div:nth-child(2) > div > div span:last-child {
    color: red;
}

.middle > div:nth-child(2) > div {
    width: 262px;
    height: 320px;
    margin: 30px 30px 0 0;
    float: left;
}

.middle > div:nth-child(2) > div img {
    width: 100%;
    height: 250px;
}

.middle > div:nth-child(2) h4 {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.middle > div:nth-child(2) > div > div:last-child {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}